How do I create an archetype that can run on an existing project?
Author: Deron Eriksson
Description: This maven tutorial describes how to create an archetype that can run on a project that already exists.
Tutorial created using: Windows Vista || JDK 1.6.0_04 || Eclipse Web Tools Platform 2.0.1 (Eclipse 3.3.1)

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Now, I'll run the archetype on the "anotherproject" project, shown here:


To run the archetype, I'll use the following command:

mvn archetype:create -DgroupId=com.maventest -DartifactId=anotherproject -DarchetypeArtifactId=maven-archetype-bacon-and-eggs -DarchetypeGroupId=com.myarchetype -DarchetypeVersion=1.0-SNAPSHOT
mvn archetype:create -DgroupId=com.maventest -DartifactId=anotherproject -DarchetypeArtifactId=maven-archetype-bacon-and-eggs -DarchetypeGroupId=com.myarchetype -DarchetypeVersion=1.0-SNAPSHOT

The output of this command is shown here:

Console output for 'mvn archetype:create -DgroupId=com.maventest -DartifactId=anotherproject -DarchetypeArtifactId=maven-archetype-bacon-and-eggs -DarchetypeGroupId=com.myarchetype -DarchetypeVersion=1.0-SNAPSHOT'

[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'archetype'.
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Default Project
[INFO]    task-segment: [archetype:create] (aggregator-style)
[INFO] ------------------------------------------------------------------------
[INFO] Setting property: classpath.resource.loader.class => 'org.codehaus.plexus.velocity.ContextClassLoaderResourceLoader'.
[INFO] Setting property: velocimacro.messages.on => 'false'.
[INFO] Setting property: resource.loader => 'classpath'.
[INFO] Setting property: resource.manager.logwhenfound => 'false'.
[INFO] ************************************************************** 
[INFO] Starting Jakarta Velocity v1.4
[INFO] RuntimeInstance initializing.
[INFO] Default Properties File: org\apache\velocity\runtime\defaults\
[INFO] Default ResourceManager initializing. (class org.apache.velocity.runtime.resource.ResourceManagerImpl)
[INFO] Resource Loader Instantiated: org.codehaus.plexus.velocity.ContextClassLoaderResourceLoader
[INFO] ClasspathResourceLoader : initialization starting.
[INFO] ClasspathResourceLoader : initialization complete.
[INFO] ResourceCache : initialized. (class org.apache.velocity.runtime.resource.ResourceCacheImpl)
[INFO] Default ResourceManager initialization complete.
[INFO] Loaded System Directive: org.apache.velocity.runtime.directive.Literal
[INFO] Loaded System Directive: org.apache.velocity.runtime.directive.Macro
[INFO] Loaded System Directive: org.apache.velocity.runtime.directive.Parse
[INFO] Loaded System Directive: org.apache.velocity.runtime.directive.Include
[INFO] Loaded System Directive: org.apache.velocity.runtime.directive.Foreach
[INFO] Created: 20 parsers.
[INFO] Velocimacro : initialization starting.
[INFO] Velocimacro : adding VMs from VM library template : VM_global_library.vm
[ERROR] ResourceManager : unable to find resource 'VM_global_library.vm' in any resource loader.
[INFO] Velocimacro : error using  VM library template VM_global_library.vm : org.apache.velocity.exception.ResourceNotFoundException: Unable to find resource 'VM_global_library.vm'
[INFO] Velocimacro :  VM library template macro registration complete.
[INFO] Velocimacro : allowInline = true : VMs can be defined inline in templates
[INFO] Velocimacro : allowInlineToOverride = false : VMs defined inline may NOT replace previous VM definitions
[INFO] Velocimacro : allowInlineLocal = false : VMs defined inline will be  global in scope if allowed.
[INFO] Velocimacro : initialization complete.
[INFO] Velocity successfully started.
[INFO] [archetype:create]
[INFO] Defaulting package to group ID: com.maventest
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating Archetype: maven-archetype-bacon-and-eggs:1.0-SNAPSHOT
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: groupId, Value: com.maventest
[INFO] Parameter: packageName, Value: com.maventest
[INFO] Parameter: package, Value: com.maventest
[INFO] Parameter: artifactId, Value: anotherproject
[INFO] Parameter: basedir, Value: C:\dev\workspace
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] ********************* End of debug info from resources from generated POM ***********************
[INFO] Archetype created in dir: C:\dev\workspace\anotherproject
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Wed Feb 20 18:53:20 PST 2008
[INFO] Final Memory: 5M/9M
[INFO] ------------------------------------------------------------------------

After the archetype completes, we can see that the expected resource files were added to the "anotherproject" project.

Expected resource files added to 'anotherproject' project
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